israel says at least three people have died. israel firing back with their own missile launches and air strikes. this is what happened on the ground in gaza, huge mushroom clouds of destruction, buildings left in ruins. israel says it targeted more than 300 terror sites. that's what they call them in gaza and the bombs fall, neighborhoods go up in flames. bodies on the streets. health ministry officials say 18 palestinians have been killed. cnn sara sidner is in gaza city, witnessing the violence and here's what she told wolf blitzer this afternoon. watch. >> reporter: okay. that is exactly -- i'm going to move out of the way and let you get a look here. i'm going to let you get a look at what is going on. i can see the black smoke. it's difficult to capture on camera but you saw that flash. this is what we have been dealing with all day. we have also been dealing with, i'm sorry, the power has just gone out, we have been dealing with power outages, wolf, but this feels like war. it may not have been declared but it feels like w